Bank of America shares dropped 5% Monday after chief executive Brian Moynihan told analysts the firm's investment banking fees will contract more than 10% in the third quarter from a year earlier, while trading revenue runs roughly flat. The forecast follows a second quarter that delivered a 50% surge in advisory and underwriting fees and a 33% jump in trading, making the deceleration the sharpest in recent memory for the second-largest U.S. bank by assets.

Moynihan blames market mix

Speaking at a conference, Moynihan cited Dealogic data showing the overall investment banking fee pool down 10% year over year. He said Bank of America lacks the same exposure to the pockets of the market seeing heavier deal flow, so its own decline will exceed the industry average. The bank still sees a healthy pipeline, especially in middle-market advisory, but the near-term revenue trajectory has visibly bent.

Trading side loses momentum

Equities and fixed-income trading, which rode volatility and client repositioning to a one-third revenue gain in the June quarter, are now tracking flat versus the same period last year. That removes a key offset that helped the bank absorb slower capital markets activity in prior cycles. With both engines decelerating simultaneously, the revenue bridge to the second half looks narrower than consensus models assumed.

AI boom narrative faces first real test

Wall Street's narrative has leaned heavily on artificial intelligence issuance and advisory mandates to sustain the fee surge that began late last year. Moynihan's comments are the first from a major universal bank to suggest that wave may be cresting. If the largest fee generators are already guiding to double-digit declines, the question shifts from whether the boom continues to how much of the second-quarter print was pulled forward.

What to watch next

Analysts will now pressure peers for similar color at upcoming conferences. The options market is pricing elevated volatility into Bank of America earnings next month, and any revision to full-year fee guidance will test whether the stock's 5% Monday slide was a correction or the start of a rerating. For now, the pipeline remains the bull case, but pipelines are not revenue until they close.